Atlantis Underwater Tycoon is an underwater city-building simulation game in which the player acts as a tycoon to simulate the real-time design and management of an underwater civilization. It was developed and published by Activision Value, and released on March 21, 2003 for Microsoft Windows on the PC.
Atlantis Underwater Tycoon was the first building sim to be set underwater.

Aliens: The Computer Game is a video game developed and published by Activision for the Commodore 64, Apple II and ZX Spectrum computer systems. It is based on the film of the same title and is also known as Aliens US in Europe, where it was initially planned to be released as Aliens: The Second Part.

Alcazar: The Forgotten Fortress is a dungeon action-adventure game, similar to Dungeon Master and The Legend of Zelda. It was released in 1985 for the Coleco Adam computer and accessory. A port for the ColecoVision. It was created by Tom Loughry from Activision, graphics by Keri (Janssen) Longaway. The game was also ported to the Commodore 64 later.

Angry Birds Trilogy is a video game co-developed by Rovio Entertainment, Exient Entertainment, Housemarque, and Fun Labs and published by Activision.
The game contains the first three games of the popular mobile game series (Angry Birds, Angry Birds Seasons and Angry Birds Rio) and was released for Xbox 360, PlayStation 3 and on Nintendo 3DS on September 25, 2012 in North America and September 28 in Europe. Both the PlayStation 3 and Xbox 360 versions of the game are able to be played with motio…

Alcatraz: Prison Escape is an action survival video game. It was developed by Zombie Studios and was published by Activision Value. The game was released worldwide on November 23, 2001 exclusively for the Microsoft Windows platform. Players control a falsely accused person as he attempts to escape five different types of prisons in order to prove his innocence in the outside world. Players have to sneak past guards in order to make it through every prison level. If seen, an alarm is rung that fo…